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If a three phase motor loses one leg will it turn backwards before it burns up?
Wiki User
∙ 15y ago
If a three phase motor loses one leg it will do neither of what you suggest. To change the rotation of a three phase motor any two motor leads must be interchanged. When one leg of a three phase system goes down it is said to be single phasing. The overload protection on the motor senses the higher current on the other two legs and trips the overload heaters. This in turn drops the contactor open and disconnects the motor from the supply.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoYes, reverse any two phases will reverse the motor direction without harm to the motor. Just make sure whatever the motor turns will not be harmed by the reversal of direction!
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